A little side note, don't forget to capitalize the first letter when stating a class. class Example & new Example();
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BobbyMar 8 '14 at 15:13

@Bobby, that is a convention. It is a common one and one adopted by WordPress Core development, but it is a convention nonetheless. It is not required by PHP.
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s_ha_dum♦Mar 8 '14 at 17:00

I don't know why i got minus vote. @s_ha_dum is helped me which means this is okay. But i don't know who did this and why he did this
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rramMar 8 '14 at 18:10

I don't know what you mean by "@s_ha_dum is helped me". I didn't help. I just made a comment about another user's comment. And even had I made a comment that helped it doesn't make the question OK. I often comment on questions/answers even if they substandard. At any rate, downvotes are anonymous (even to mods), but hover over the down arrow and you will see "This question does not show any research effort...". I am fairly sure that is the reason for the downvote. You have a PHP object syntax problem and two shortcode ones. Research into either of those would have gotten you a long way.
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s_ha_dum♦Mar 8 '14 at 18:25

I don't know what others think but anyway, thanks for your help and explanation about this. I very much appreciate you. Thanks @s_ha_dum
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rramMar 8 '14 at 19:06